If you’re trying to recover a license from an old system, look for a file named radmin.radmin or license.radmin in %ProgramFiles%\Radmin or %AppData% . Copying that file to a new installation of the may work if the license is not node-locked to hardware.
Radmin is proprietary software. Using a forged or shared license file violates Famatech’s End User License Agreement (EULA). Companies caught using unlicensed software can face audits, fines, and legal action. radmin 3.5.2 license file